<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title></title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }
        
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #000000;
        }
        
        ul {
            position: relative;
            display: flex;
            height: 200px;
        }
        
        ul::after {
            content: "12345";
            position: absolute;
            top: 0;
            left: 50%;
            color: darkturquoise;
            font-size: 30px;
            font-weight: 700;
            transform: translate(-50%, -700%);
        }
        
        li {
            width: 20px;
            height: 20px;
            border-radius: 10px;
            margin: 0 10px;
        }
        
        li:nth-child(1) {
            background-color: red;
            animation: love1 5s 0s infinite;
        }
        
        li:nth-child(2) {
            background-color: darkturquoise;
            animation: love2 5s 0.2s infinite;
        }
        
        li:nth-child(3) {
            background-color: darksalmon;
            animation: love3 5s 0.4s infinite;
        }
        
        li:nth-child(4) {
            background-color: deeppink;
            animation: love4 5s 0.6s infinite;
        }
        
        li:nth-child(5) {
            background-color: yellowgreen;
            animation: love5 5s 0.8s infinite;
        }
        
        li:nth-child(6) {
            background-color: deeppink;
            animation: love4 5s 1.0s infinite;
        }
        
        li:nth-child(7) {
            background-color: red;
            animation: love3 5s 1.2s infinite;
        }
        
        li:nth-child(8) {
            background-color: darkturquoise;
            animation: love2 5s 1.4s infinite;
        }
        
        li:nth-child(9) {
            background-color: yellowgreen;
            animation: love1 5s 1.6s infinite;
        }
        /* 动画 */
        
        @keyframes love1 {
            30%,
            50% {
                height: 60px;
                transform: translateY(-30px);
            }
            70%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }
        
        @keyframes love2 {
            30%,
            50% {
                height: 125px;
                transform: translateY(-60px);
            }
            70%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }
        
        @keyframes love3 {
            30%,
            50% {
                height: 160px;
                transform: translateY(-75px);
            }
            70%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }
        
        @keyframes love4 {
            30%,
            50% {
                height: 180px;
                transform: translateY(-60px);
            }
            70%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }
        
        @keyframes love5 {
            30%,
            50% {
                height: 200px;
                transform: translateY(-45px);
            }
            70%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }
    </style>
</head>

<body>
    <ul>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>
</body>

</html>